Brush



Dec. 23, 1941. CAVE ET AL 2,267,584

BRUSH Filed June 28, 1939 ATT P/VEY Patented Dec. 23, 1941 UNiTED STATES PATET OFFICE.

BRUSH Henry Cave and Marshall A. Gates, Hartford, Conn., assignors to The Fuller Brush Company, Hartford, Conn., a corporation of Connecticut Application June 28, 1939, Serial No. 281,673 14 Claims. (Chit-182) This invention relates more particularly to that type of brushes which comprises a core or arbor for supporting the bristles and which arbor may be used as a means for mechanically rotating the brush for cleaning operations, and an object of the invention, among others, is the production of a brush of this type of simple construction and capable of severe use and having means whereby the brush material may be secured to the arbor in a most efilcient manner.

Arrangements embodying the invention and in the construction and use of which the objects herein Set out, as well as others, may be attained, are illustrated in the accompanying drawing, in which- Figure 1 is a side view of a brush embodying the invention.

Figure 2 is an end view of the same.

Figure 3 is a View in lengthwise central section, the arbor being shown in full. I

Figure 4 is a view looking at the end opposite to that shown in Figure 2.

Figures 5 and 6 are isometric perspective views of one end of the brush strip showing the manner of flattening and bending it for engagement with the holder.

This invention is particularly adapted for use in the construction of brushes which embody a mechanically rotated arbor and which brushes are put to severe use as in the cleaning of utensils which are smeared with grease and other matter usually of an animal nature and which adheres tenaciously to said utensils which are employed for cooking purposes. These brushes commonly comprise bristles of a stiff fibrous character including wire formed from metal. In the structure shown herein these bristles are secured in a-base of trough-like form from which said bristles protrude and which are firmly secured within the base in any suitable manner, this structure being termed a brush strip herein.

In the accompanying drawing the numeral l0 denotes an arbor comprising the core of a brush structure. This arbor is preferably of cylindrical form from its butt end to a point nearing the tip. At this point a thread H is formed extending' preferably one or more times around the arbor. This thread is coarse in character to receive the spiral turns of a base I2 of grooved form in cross section to receive bristles L; which are secured within the base and project from the mouth of the groove therein. Any suitable means for retaining the bristles in the base l2 may be employed.

In a preferred manner of constructing the brush said brush strip comprising the base and bristles is coiled into spiral form, the metal of the base being set" in this operation to maintain such spiral form and to approximately fit the arbor I0.

Lugs H are formed on the tip end of the arbor, said lugs being spaced apart to receive the end l5 of the brush strip which is bent from the spiral form to enter between said lugs and as shown in Fig. 2 of the drawing.

In the form of the brush herein shown the grooves of the threads ill are of curved form at the bottom to fit the base 52 of the brush strip and these threads. extend three or four times around the arbor, this being the preferred structure. The shape of the arbor at that point containing the threads and from there to the tip is of conical form, and a support it comprises the tip of the arbor and is located between the thread and the end of. the arbor as shown in Fig. 3 of the drawing. The coils at this end of the brush are wrapped around this support and enable a springing action of this end of the brush to be obtained sufiicient to locate the end I5 between the lugs l4 without distorting the coiled form of the brush, the end I5 being lifted over the lugs and then springing into position between the lugs. The end l4 extended across the tip provides a filling of bristles between the turns of the coil and at the end of the arbor, thereby covering such end and filling the space to a certain extent.

A holder I! in the form of a collar is rotatably fitted to thearbor ID, a groove l8 extending across the inner surface of the holder for the reception of an angularly projecting piece from the end of the base l2. This may be an integral part of said base, said end being flattened to fit the groove. This flattened end I9 is extended through the groove and its extremity 20 is outturned into a notch M in one side of the holder H, as shown in Figs. 3 and 4 of the drawing. A set screw 22 may be employed for securing the holder to the arbor.

This holder 1 is no part of the invention illustrated and described herein, such holder together with other elements forming the subject matter of an application to Cave and Le Febvre, filed concurrently herewith, of Ser. No. 281,672.

To assemble the brush strip upon the arbor said strip is first coiled, the metal of the base I 2 in this coiling operation being set to quite closely conform to the shape of the arbor. The end I5 is flattened and bent as shown in Figs. 5 and 6 of the drawing. The coil is then placed will cause the coil to pass onto the arbor by a screwing action. The coil will oi course leave the threads at the inner end of the latter, but the outer coils will be retained in the threads when the brush has been fully screwed onto the arbor at which time the end iii of the brush structure is engaged between the notches id. The plu= rallty of turns of the brush strip upon the sup-=- port it will enable such end to be sprung over the lugs id, such turns separating sufficiently to permit this and springing back into their for: mer shape.

The opposite end of the brush strip is then secured to the arbor by rotating the holder it in any suitable manner and securing it by means of the set screw As a means for turning the holder a hole therein for the reception of a spanner wrench may be used.

While lugs are shown herein at the end of the arbor as a means for securing this end of the brush strip the use of such lugs is not imperative as other means may be employed for accomplishing this purpose and the invention is not there fore to be confined to the lug arrangement shown and described herein, and the invention is not therefore to be limited to such lug construction.

We claim: 1

l. A brush including an arbor, a brush strip comprising a base with bristles projecting therefrom spirally wound on said arbor, rigid lugs projecting from the tip end of said arbor and rigidly spaced apart suii'iciently for reception of said strip laterally thereof into said space at the end of the lugs and tip of the arbor, an end or said spirally Wound strip being secured between said lugs to retain this end of the brush strip in place, and means for securing the opposite end of said strip.

2. A brush including an arbor with a thread formed. thereon, a brush strip comprising a base spirally wound on said arbor and engaged in said thread to retain the strip on the arbor,

means to which one end of said strip is secured and rotatably mounted on said arbor for decreasing the diameter of the coils of said strip to cause it to tightly grip the arbor, and means for securing the opposite end of said brush strip to said arbor.

3. A brush including an arbor with a thread formed near the outer end thereof, a smooth unthreaded support between the threaded portion and the tip of the arbor, a brush strip comprising a base spirally wound on said arbor and engaged with saidv threaded portion to retain the strip on the arbor with a plurality of turns of said brush strip around said support, lugs formed at the end of said tip and rigidly spaced apart sufiiciently for reception of said strip laterally thereof into said space at the end or the lugs and the tip of the arbor, one end of said brush strip being bent and secured between said lugs, and means for securing the opposite end of the brush strip to said arbor.

a. A brush including an arbor with athread extending a plurality oi turns around said arbor near the outer end thereof, a smooth unthreaded tlniered support between the threaded portion and the tip of the arbor, a brush strip comprising a base of stiff rigid material spirally wound on said arbor and engaged with said threaded portion to retain the strip on the arbor with a plurality of turns of said brush strip around said support to produce spring action in said turns,

lugs projecting from the end of the arbor and rigidly spaced apart to produce an open ended space at the ends of the lugs, the end of said brush strip being bent and secured between said lugs by said spring action, and means for securing the opposite end of said brush strip.

5. A brush including an arbor, a brush strip comprising a base oi stiii rigid material with bristles secured thereto spirally wound on said arbor and otherwise unattached thereto between its ends, a thread formed on said arbor at the outer end thereof to receive the spiral turns of said brush strip, rigid spaced apart lugs formed to provide an open ended space on the tip endor" said arbor to receive one end oi said brush strip inserted laterally into said space to secure it in place, and means for securing the opposite end of the brush strip to said arbor.

6. A brush including an arbor, rigid spaced apart lugs formed to provide an open ended space on the end of said arbor, a brush strip comprising a base with bristles projecting therefrom spirally wound on said arbor, an end or" said spirally wound strip with the bristles thereon being extended diametrically across the end of the arbor and secured between said lugs to provide bristles projecting out of the mouth of said space at the end of said arbor, and means for securing the opposite end of said brush strip to said arbor.

7. A brush including an arbor, a brush strip comprising a base 02 stifi rigid material with bristles projecting therefrom spirally wound on said arbor but otherwise unattached thereto between its ends, lugs projecting from the tip end of said arbor and rigidly spaced apart to provide a permanently open ended space at the ends of said lugs, one end of said spirally wound strip being located and retained between said lugs by the spring action of said strip to retain this end or" the said strip in place, and means for tightening and securing the opposite end of the brush strip to said arbor.

8. A brush including an arbor, a brush strip comprising a trough shaped base formed of partially stiff rigid material with spring characteristics spirally wound on said arbor with successive coils resting against and supporting each other, lugs projecting from the tip of said arbor and rigidly separated to produce a permanently open ended space, one end of said brush strip being laterally bent and located and retained in said space by the spring action of said strip, and means for securing the end of-the strip opposite said bent end to said arbor.

9. A. brush including an arbor of cylindrical shape at one part and with a spirally formed groove between said cylindrical part and the tip of the arbor, a brush strip comprising a trough shaped base formed of partially stifi rigid material with spring characteristics spirally wound on said arbor and within said groove with suc= cessive coils resting against and supporting each other, lugs projecting from the tip of said arbor and rigidly separated to produce a permanently open ended space, an end of said brush strip being laterally bent and located and retained in said space by the spring action of said brush strip, and means for securing the end of said strip opposite said bent end to said arbor.

10. A brush including an arbor of cylindrical shape at one part with a spirally formed groove between said cylindrical part and the tip of the arbor and asmooth portion between said groove and said tip, a brush strip comprising a trough shaped base formed oi partially stiff rigid material with spring characteristics spirally wound on the cylindrical portion of said arbor and on said tip with successive coils resting against and supporting each other, lugs projecting from the tip of said arbor and rigidly separated to produce a permanently open ended space, the end of said strip being laterally bent and located and retained in said space by spring action of said strip permitted by said smooth shaped tip, and means for securing the end of said strip opposite said bent end to said arbor.

ll.-A brush including an arbor of cylindrical shape at one part and with its outer end tapered I to a smaller dimension at said outer end, a

spirally shaped groove formed in said tapered portion next to the cylindrical part of the arbor and a smooth tip located between said grooved portion and the outer end of the arbor, a brush strip comprising a trough shaped base formed 01' partially stifi rigid material with spring characteristics spirally wound on said arbor with successive coils resting against and supporting each other, lugs projecting from the tip of said arbor and rigidly separated to produce a permanently open ended space, one end of said brush strip being laterally bent and located in said space by the spring action permitted by said tapered shaped end and retained in said space by said spring action of said strip, and means for securing the, opposite end of said strip to said arbor.

12. A brush including an arbor, a brush strip I by the spring action of said coils, anchoring means located at the opposite end otsaid strip and rotatably mounted on the arbor, means for securing this end of the brush strip to said anchoring means whereby rotation of the latter will bind the strip upon the arbor, and means for fastening said anchoring means to the arbor.

13. A brush including an arbor, a brush strip comprising a trough shaped base formed of partially stiff rigid material spirally wound on said arbor with successive coils resting against and supporting each other and otherwise unattached to said arbor between the ends, lugs projecting from the tip of said arbor and rigidly separated to produce a permanently open ended space, one end of said strip being laterally bent for location in said space effected by the yielding action of said spirally wound coils and held in the space by the spring action of said coils, anchoring means at the opposite end of said strip rotatably mounted on the arbor and having a groove there in, a. bent end of said brush strip extending into said groove whereby rotation of said anchoring means will bind the strip upon the arbor, and means for fastening said anchoring means to the arbor.

14. A brush including an arbor, a brush strip comprising a trough shaped base formed of partially stiff rigid material spirally wound on said arbor with successive coils thereof resting against and supporing each other and otherwise unattached to said arbor between the ends, means for fastening said brush strip to the outer end 01 said arbor, a collar rotatably mounted on the ar-'- bor at the opposite end of said brush strip, means for securing said strip to said collar whereby rotation of the latter will tighten the coils of said strip upon the arbor, and means for securing said collar to the arbor.

HENRY CAVE.

MARSHALL A. GATES. 

